This thesis deal with problems analyses adipic acids in power unit aqueous suspension. The beginning part is sight on problems sulfur emission, witch rising at combustion stiff firings in power unit and on their negative effects on environment. Further was examined and check method assessment adipic acids on the basis literary background research and was effected practical metering how standard acids, so real designs delivered power station insider ČEZ a.s.. At the close thesis is described method, which was practically well - tried, tested and validated.